Vari DS-521D User Manual

2.3.1.1 Technical information
DS-521D, DS-521DB Unit DS-521D DS-521DB
Length mm 1730
Width (including the side screen) mm 763
Height mm 1180
Weight kg 64 63
Maximum cutting width cm 58,5
Safe climbing ability
∠
10°
Cutting disk revolutions
47
min
-1
1990
Maximum blade circumferential velocity m.s
-1
60,9
Travelling speed km.h
-1
2,0
Area capacity
48
m
2
.h
-1
1170
Gearbox oil capacity l (litre) 0,025
Gearbox oil quality
API GL-4 (GL-5)
SAE 90 (80W-90)
Tab. 4: Technical information for DS-521D, DS521DB
2.3.1.2 Engine information
Engine Unit Value
Type - HONDA GCV-160 Briggs & Stratton 675 Series
TM
Engine displacement cm
3
160 190
Bore x stroke mm 64 x 50 68,3 x 51,8
Max. power/at rpm (HP)
49
kW/min
-1
(HP) 3,3/3600 (4,4) 2,7/3200 (3,6)
Max. torque/at rpm
50
N.m/min
-1
9,4/2500 9,2/3060
Maximum (set) engine rpm min
-1
3200 ± 100 3200 ± 100
Fuel consumption l (litre) 1,1 at 3000min
-1
1,55 at 3060min
-1
Maximum engine tilt (long period)
∠
20° 15°
Maximum engine tilt (short period
51
)
∠
30° 30°
Fuel tank volume
52
l (litre) 0,91 1
Fuel (unleaded) petrol ON 91-95 ON 91-95
Engine oil filling l (litre) 0,55 0,6
Oil quality SAE SAE 10W-30
SAE 30
SAE 10W-30
SAE 30
Ignition plug -
NKG BPR6ES CHAMPION RJ19LM
BRISK LR15YC BRISK JR 19
Tab. 5: Engine technical information
2.3.2 Description of the machine and its parts
Brush cutter DS-521D, DS-521DB (Pict.3) is built on a steel frame, to which all important parts of the machine are attached. All controls (1,2 and 4)
are placed on the handlebars. Handlebars are attached to the frame with a bolted connection (3) and their height is adjustable into 3 positions.
Handles (12) secure a firm grip and machine handling during work. On the left side of the handlebars, there is the wheel drive clutch lever (2) which
controls the movement of the machine in forward direction. On the right side, there is lever (1) of the disc drive clutch for turning the cutting disk drive on
(off). Both control levers return to their original position when the handlebars are released in a critical situation and disconnect the engine power transfer.
The cutting disk is equipped with an automatic brake
53
which stops the disk. Engine speed is controlled with an accelerator lever (4). The wheel drive is
controlled by worm-gear unit with a belt clutch which provides fluent power transfer onto the wheels (15) (the machine does not start with a jump). The
gearbox and clutch are covered by a plastic gearbox cover (16). There is the cutting disk (7) with four steel blades (8) in the front part. The attendant is
protected against flying parts of the cut stand by plastic cover (10) and cutting disc steel cover (9) which meet the EN 12 733 standard. A detachable side
screen (6), which is attached with a bolted connection (5), controls the line spacing.
47 Actual rpm. of the disc when not cutting, including belt transmission losses.
48 Square meters cut per min./hour will vary, depending on the type of the stand.
49 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
50 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
51 Short period – up to 1 minute.
52 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
53 The automatic break is an active protective feature that supports the machine’s safety.
20

Vari DS-521D Specifications

General

Brand	Vari
Model	DS-521D
Category	Brush Cutter
Language	English